9Cengiz H, Ya§ar L, Ekin M et al. Management of intractablepostpartum haemorrhage in a tertiary center : A 5 - year experi-ence [J] .Niger Med J, 2012, 53 (2); 85.
10Chu CS, Brhlikova P, Pollock AM. Rethinking WHO guid-ance :review of evidence for misoprostol use in the preventionof postpartum haemorrhage[J]. J R Soc Med,2012,105(8); 336.